Sette Frummagem is a protagonist of Unsounded. She is a humanoid possessing a lion tail and sharp teeth (though the latter are filed, not natural). Her body is that of an andromorph, lacking breasts, nipples, and navel, but she identifies as female. Though she is not intrinsically ashamed of her body, she is embarrassed when others point out that she looks different from other girls. She is chronologically 22 years old, but is unable to physically or mentally mature past the age of 12 due to supernatural forces.

Sette possesses many odd supernatural abilities. She has a supernaturally keen sense of smell that even allows her to smell magic (which she says smells disgusting), she can compel ghosts to follow her orders, and she can edit her own memory by tearing undesired memories out of her soul.

Sette is canonically asexual, but this is not necessarily the case in fanworks.